They go the extra mile to troubleshoot promptly

Live customer service has been faded out so its email only but the agent assisting me by email provided me with a ph# extension to be assisted by a live agent who really got down to the problem and was able to figure out that it was the LG phone I was using not a defective sim. LG co. has been shut down for about a year now though there phones are still being sold in stores, through carriers & online.I happened to still have an Iphone 7 that was given to me but never used as I was always used to Android but agent Luis L. was so helpful and efficient walking me through and it was ready in no time for full use and I am ever so greatful. Tello has wonderful customer service.

High quality service for voice/text and…

High quality service for voice/text and data. I like to be able to change my data cap up and down according to use, and Tello lets me do this easily, on the fly. They have an excellent web site that is simple and straightforward. I wish my data use could be monitored more up-to-the-minute (it updates "within 24h") but this is a minor issue and I figure it has to do with technical limitations that are beyond Tello's control. 5 stars overall, highly recommended.

Affordable! So far, great!

So far, the experience has been great, no issues with service, and affordable. You can customize your plan, which is amazing. The only possible concern I have is if I travel outside the US or somewhere more remote. This is a great option if you're on a budget.